In-ear headphone, 12 Ω, 104 dB, Neodymium Drivers, aluminium housing, mini-jack 3.5 mm, includes soft case, Grey/Gold housing, excellent for MP3 players, Smart Phones, iPad and tablets. The DTX 71 iE delivers outstanding sound quality throughout the entire audio range. Neodymium acoustic drivers and the use of lightweight metal housings accentuate the superb quality of the DTX 71 iE. When not in use, the earphones can be stored in the supplied soft case. Two year warranty from beyerdynamic.